The Ultimate Troubleshooting a Forced-Air System Quiz

A forced-air system is an efficient way to distribute warm or cool air to every room of your home. Learning some basic troubleshooting skills may help you to maintain the unit. Take this quiz to see how to blow away the troubles in your forced-air distribution system.

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Question 1 of 15

When a forced-air system is out of balance, what may be the result?

uneven distribution of hot or cold air

The result may be an uneven distribution of hot or cold air.

unsupported ducts

tilting ducts

Question 2 of 15

When a system is out of balance, what may be the cause?

furnace malfunction

improperly set ducts and registers

The cause may be improperly set ducts and registers.

blower malfunction

Question 3 of 15

How can you tell if a damper is in the open position?

parallel to the top and bottom of the ducting

When in the open position, the damper will be turned parallel to the top and bottom of the ducting.

perpendicular to the top and bottom of the ducting

at a right angle to the top and bottom of the ducting

Question 4 of 15

How can you improve the flow of warm air through your home?

Increase blower speed.

To increase the flow of warm air, raise the speed of the blower.

Decrease blower speed.

Raise thermostat temperature.

Question 5 of 15

How can you decrease the noise from a forced-air system?

Increase blower speed.

Decrease blower speed.

Decreasing the blower speed may decrease the noise.

Decrease thermostat temperature.

Question 6 of 15

What type of insulation may be used for ducts?

wool

fiberglass

Fiberglass insulation may be used to wrap ducts.

foam

Question 7 of 15

Forced-air systems are fueled by electricity, gas or:

oil

Forced-air systems are fueled by electricity, gas or oil.

coal

wood

Question 8 of 15

What happens to the cold air that is returned to the furnace?

rewarmed

distributed

both answers

The cold air is rewarmed and distributed.

Question 9 of 15

A forced-air system may be used for what purpose other than heating?

distributing cooled air

A forced-air system may also be used to distribute cooled air from a central air conditioner.